The Tor Browser: comparison accessible/src/xul/XULComboboxAccessible.cpp

--1:000000000000
+:c3b8e0790ade
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "XULComboboxAccessible.h"
+#include "Accessible-inl.h"
+#include "nsAccessibilityService.h"
+#include "DocAccessible.h"
+#include "nsCoreUtils.h"
+#include "Role.h"
+#include "States.h"
+#include "nsIAutoCompleteInput.h"
+#include "nsIDOMXULMenuListElement.h"
+#include "nsIDOMXULSelectCntrlItemEl.h"
+using namespace mozilla::a11y;
+////////////////////////////////////////////////////////////////////////////////
+// XULComboboxAccessible
+////////////////////////////////////////////////////////////////////////////////
+XULComboboxAccessible::
+XULComboboxAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+AccessibleWrap(aContent, aDoc)
+{
+if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+nsGkAtoms::autocomplete, eIgnoreCase))
+mGenericTypes |= eAutoComplete;
+else
+mGenericTypes |= eCombobox;
+}
+role
+XULComboboxAccessible::NativeRole()
+{
+return IsAutoComplete() ? roles::AUTOCOMPLETE : roles::COMBOBOX;
+}
+uint64_t
+XULComboboxAccessible::NativeState()
+{
+// As a nsComboboxAccessible we can have the following states:
+//     STATE_FOCUSED
+//     STATE_FOCUSABLE
+//     STATE_HASPOPUP
+//     STATE_EXPANDED
+//     STATE_COLLAPSED
+// Get focus status from base class
+uint64_t state = Accessible::NativeState();
+nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
+if (menuList) {
+bool isOpen = false;
+menuList->GetOpen(&isOpen);
+if (isOpen)
+state |= states::EXPANDED;
+else
+state |= states::COLLAPSED;
+}
+return state | states::HASPOPUP;
+}
+void
+XULComboboxAccessible::Description(nsString& aDescription)
+{
+aDescription.Truncate();
+// Use description of currently focused option
+nsCOMPtr<nsIDOMXULMenuListElement> menuListElm(do_QueryInterface(mContent));
+if (!menuListElm)
+return;
+nsCOMPtr<nsIDOMXULSelectControlItemElement> focusedOptionItem;
+menuListElm->GetSelectedItem(getter_AddRefs(focusedOptionItem));
+nsCOMPtr<nsIContent> focusedOptionContent =
+do_QueryInterface(focusedOptionItem);
+if (focusedOptionContent && mDoc) {
+Accessible* focusedOptionAcc = mDoc->GetAccessible(focusedOptionContent);
+if (focusedOptionAcc)
+focusedOptionAcc->Description(aDescription);
+}
+}
+void
+XULComboboxAccessible::Value(nsString& aValue)
+{
+aValue.Truncate();
+// The value is the option or text shown entered in the combobox.
+nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
+if (menuList)
+menuList->GetLabel(aValue);
+}
+bool
+XULComboboxAccessible::CanHaveAnonChildren()
+{
+if (mContent->NodeInfo()->Equals(nsGkAtoms::textbox, kNameSpaceID_XUL) ||
+mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
+nsGkAtoms::_true, eIgnoreCase)) {
+// Both the XUL <textbox type="autocomplete"> and <menulist editable="true"> widgets
+// use XULComboboxAccessible. We need to walk the anonymous children for these
+// so that the entry field is a child
+return true;
+}
+// Argument of false indicates we don't walk anonymous children for
+// menuitems
+return false;
+}
+uint8_t
+XULComboboxAccessible::ActionCount()
+{
+// Just one action (click).
+return 1;
+}
+NS_IMETHODIMP
+XULComboboxAccessible::DoAction(uint8_t aIndex)
+{
+if (aIndex != XULComboboxAccessible::eAction_Click) {
+return NS_ERROR_INVALID_ARG;
+}
+if (IsDefunct())
+return NS_ERROR_FAILURE;
+// Programmaticaly toggle the combo box.
+nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
+if (!menuList) {
+return NS_ERROR_FAILURE;
+}
+bool isDroppedDown;
+menuList->GetOpen(&isDroppedDown);
+return menuList->SetOpen(!isDroppedDown);
+}
+NS_IMETHODIMP
+XULComboboxAccessible::GetActionName(uint8_t aIndex, nsAString& aName)
+{
+if (aIndex != XULComboboxAccessible::eAction_Click) {
+return NS_ERROR_INVALID_ARG;
+}
+if (IsDefunct())
+return NS_ERROR_FAILURE;
+// Our action name is the reverse of our state:
+//     if we are close -> open is our name.
+//     if we are open -> close is our name.
+// Uses the frame to get the state, updated on every click.
+nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
+if (!menuList) {
+return NS_ERROR_FAILURE;
+}
+bool isDroppedDown;
+menuList->GetOpen(&isDroppedDown);
+if (isDroppedDown)
+aName.AssignLiteral("close");
+else
+aName.AssignLiteral("open");
+return NS_OK;
+}
+////////////////////////////////////////////////////////////////////////////////
+// Widgets
+bool
+XULComboboxAccessible::IsActiveWidget() const
+{
+if (IsAutoComplete() ||
+mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
+nsGkAtoms::_true, eIgnoreCase)) {
+int32_t childCount = mChildren.Length();
+for (int32_t idx = 0; idx < childCount; idx++) {
+Accessible* child = mChildren[idx];
+if (child->Role() == roles::ENTRY)
+return FocusMgr()->HasDOMFocus(child->GetContent());
+}
+return false;
+}
+return FocusMgr()->HasDOMFocus(mContent);
+}
+bool
+XULComboboxAccessible::AreItemsOperable() const
+{
+if (IsAutoComplete()) {
+nsCOMPtr<nsIAutoCompleteInput> autoCompleteInputElm =
+do_QueryInterface(mContent);
+if (autoCompleteInputElm) {
+bool isOpen = false;
+autoCompleteInputElm->GetPopupOpen(&isOpen);
+return isOpen;
+}
+return false;
+}
+nsCOMPtr<nsIDOMXULMenuListElement> menuListElm = do_QueryInterface(mContent);
+if (menuListElm) {
+bool isOpen = false;
+menuListElm->GetOpen(&isOpen);
+return isOpen;
+}
+return false;
+}

The Tor Browser / file comparison

comparison: accessible/src/xul/XULComboboxAccessible.cpp

accessible/src/xul/XULComboboxAccessible.cpp